In England, it's quite common to use informal affectionate terms. They vary regionally - love, pet, hinny, babs, duck, cock, hen, flower, petal, princess etc. Their use isn't uncontroversial, but they're widely accepted by a large proportion of the population and frequently used in many offices.
https://yougov.co.uk/news/2012/02/08/being-called-babe-offen...